Itsdangerous provides a module that is a port of the django signing module. It's not directly copied but some changes were applied to make it work better on its own.

itsdangerous allows web applications to use a key only it knows to cryptographically sign data and hand it over to someone else (e.g. a user). When it gets the data back it can easily ensure that nobody tampered with it.

This package provides the itsdangerous Python module for Python 3.x.